/*
 * book.c -- 一本书的图书目录
 *
 */


#include <stdio.h>
#include <string.h>

char * s_gets(char * st, int n);

#define MAXTITL 41
#define  MAXAUTL 31

struct book {
    char title[MAXTITL];
    char author[MAXAUTL];
    float value;
};


int main(void)
{
    struct book library;

    printf("Please enter the book title.\n");
    s_gets(library.title, MAXTITL);
    printf("Now enter the author\n");
    s_gets(library.author, MAXAUTL);
    printf("Now enter the value\n");
    scanf("%f", &library.value);
    
    printf("%s: \"%s\" $%.2f\n", library.title, library.author, library.value);
    printf("%s: \"%s\" ($%.2f)\n", library.author, library.title, library.value);
    printf("Done.\n");

    return 0;
}

char * s_gets(char * st, int n)
{
    char * ret_val;
    char * find;

    ret_val = fgets(st, n , stdin);

    if (ret_val) {
        find = strchr(st, '\n');
        if(find)
        {
            *find = '\0';
        }
        else {
            while(getchar() != '\n') {
                continue;
            }
        }
    }
    return ret_val;
}
